Preparation method of dye-sensitized solar cell with double-layer tin oxide structure photo-anode
阅读说明：本技术 一种双层氧化锡结构光阳极的染料敏化太阳电池制备方法 (Preparation method of dye-sensitized solar cell with double-layer tin oxide structure photo-anode ) 是由 段军红 樊昊 邹时兵 杨浩 刘伟庆 于 2019-12-12 设计创作，主要内容包括：本发明公开了一种双层氧化锡结构光阳极的染料敏化太阳电池制备方法,先将一定量的介孔氧化锡浆料使用丝网印刷在FTO导电玻璃上,在一定条件下烧结为一定厚度的薄膜,重复数次,形成所需厚度的介孔氧化锡薄膜,然后使用同样的方法再烧结一层大颗粒氧化锡薄膜,从而得到双层氧化锡结构的光阳极,再组装成染料敏化太阳电池。本发明能够对氧化锡的粒径大小、薄膜的厚度进行控制,且制备方法相对简单、易于控制,可有效的增加染料敏化太阳电池效率。(The invention discloses a preparation method of a dye-sensitized solar cell of a double-layer tin oxide structure photo-anode, which comprises the steps of firstly, using a certain amount of mesoporous tin oxide slurry to be silk-screen printed on FTO conductive glass, sintering the slurry into a film with a certain thickness under a certain condition, repeating the process for several times to form a mesoporous tin oxide film with a required thickness, then using the same method to sinter a layer of large-particle tin oxide film, thus obtaining the double-layer tin oxide structure photo-anode, and then assembling the dye-sensitized solar cell. The invention can control the grain size of the tin oxide and the thickness of the film, has relatively simple preparation method and easy control, and can effectively increase the efficiency of the dye-sensitized solar cell.)
1. A preparation method of a dye-sensitized solar cell of a double-layer tin oxide structure photo-anode is characterized by comprising the following steps: firstly, a certain amount of mesoporous tin oxide slurry is printed on FTO conductive glass by using a screen, the FTO conductive glass is sintered into a film with a certain thickness under a certain condition, the sintering is repeated for a plurality of times to form a mesoporous tin oxide film with a required thickness, then a layer of large-particle tin oxide film is sintered by using the same method, so that a photo-anode with a double-layer tin oxide structure is obtained, and then the dye-sensitized solar cell is assembled.
2. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the size of the mesoporous tin oxide is 20 nm-50 nm.
3. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the thickness of the mesoporous tin oxide film is 3 um-4 um in one-time printing and sintering.
4. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the mesoporous tin oxide film needs to be printed and sintered for 4 times to form a mesoporous tin oxide film of 12 um-16 um.
5. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the sintering temperature of the mesoporous tin oxide film is 500 ℃, and the time is 30 min.
6. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the size of the large-particle tin oxide is 300 nm-600 nm.
7. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the thickness of the large-particle tin oxide film is 3 um-6 um.
8. The method for preparing the dye-sensitized solar cell with the double-layer tin oxide structure photo-anode according to claim 1 is characterized in that: the sintering temperature of the large-particle tin oxide film is 500 ℃, and the time is 30 min.
Technical Field
The invention relates to the technical field of solar cell technical materials, in particular to a preparation method of a dye-sensitized solar cell with a double-layer tin oxide structure photo-anode.
Background
The solar energy source is wide, green and clean, can effectively solve the global energy crisis, has little pollution and harm to the environment, and has important strategic significance for the sustainable development of China. The dye-sensitized solar cell has the advantages of high theoretical photoelectric conversion efficiency, small pollution, stable performance, large-scale production and the like, thereby having considerable research value. The general method for improving the photoelectric conversion efficiency of the dye-sensitized solar cell comprises the following steps: firstly, the energy level of the photoanode is adjusted to be more matched with the dye, so that the charge transmission efficiency is enhanced. And secondly, the structure of the photo-anode is improved to enhance the absorption capacity of the photo-anode to illumination. Therefore, the invention provides a preparation method of a dye-sensitized solar cell of a double-layer tin oxide structure photo-anode, wherein a layer of large-particle tin oxide film is printed on the photo-anode, so that the absorption of illumination can be enhanced by using the scattering of the large-particle tin oxide film, and meanwhile, the surface of mesoporous tin oxide is passivated, and the recombination of electron hole pairs is effectively inhibited, thereby enhancing the charge transmission and achieving the purpose of improving the efficiency of the dye-sensitized solar cell. The invention can control the grain size of the tin oxide and the thickness of the film, has relatively simple preparation method and easy control, and can effectively increase the efficiency of the dye-sensitized solar cell.
Disclosure of Invention
The invention aims to solve the problems that: the preparation method of the dye-sensitized solar cell with the double-layer tin oxide structured photo-anode can control the particle size of tin oxide and the thickness of a thin film, is relatively simple and easy to control, and can effectively increase the efficiency of the dye-sensitized solar cell.
The technical scheme provided by the invention for solving the problems is as follows: a preparation method of a dye-sensitized solar cell with a double-layer tin oxide structure photo-anode comprises the steps of firstly, using a certain amount of mesoporous tin oxide slurry to be silk-screen printed on FTO conductive glass, sintering the slurry into a film with a certain thickness under a certain condition, repeating the process for a plurality of times to form a mesoporous tin oxide film with a required thickness, then using the same method to sinter a layer of large-particle tin oxide film, thus obtaining the double-layer tin oxide structure photo-anode, and then assembling the dye-sensitized solar cell.
Preferably, the mesoporous tin oxide has a size of 20nm to 50 nm.
Preferably, the thickness of the mesoporous tin oxide film is 3 um-4 um in one printing and sintering process.
Preferably, the mesoporous tin oxide film is printed and sintered for 4 times to form a mesoporous tin oxide film of 12um to 16 um.
Preferably, the sintering temperature of the mesoporous tin oxide film is 500 ℃ and the time is 30 min.
Preferably, the large particle tin oxide is 300nm to 600nm in size.
Preferably, the thickness of the large-particle tin oxide film is 3um to 6 um.
Preferably, the sintering temperature of the large-particle tin oxide film is 500 ℃ and the time is 30 min.
Compared with the prior art, the invention has the advantages that: the invention provides a preparation method of a dye-sensitized solar cell of a double-layer tin oxide structure photo-anode, wherein a layer of large-particle tin oxide film is printed on the photo-anode, so that the absorption of illumination can be enhanced by utilizing the scattering of the large-particle tin oxide, and meanwhile, the surface of mesoporous tin oxide is passivated, and the recombination of electron hole pairs is effectively inhibited, thereby enhancing the charge transmission and achieving the purpose of improving the efficiency of the dye-sensitized solar cell. The invention can control the grain size of the tin oxide and the thickness of the film, has relatively simple preparation method and easy control, and can effectively increase the efficiency of the dye-sensitized solar cell. And the production cost is low, the large-scale production is easy, and the requirements of people can be met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1: the structural schematic diagram of the dye-sensitized solar cell of the double-layer tin oxide structure photo-anode
In the figure: 1. FTO conductive glass; 2. an electrolyte; 3. a dye molecule; 4. mesoporous tin oxide; 5. large-particle tin oxide; 6. a platinum electrode; 7. FTO conductive glass.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings and examples, so that how to implement the embodiments of the present invention by using technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The invention relates to a preparation method of a dye-sensitized solar cell with a double-layer tin oxide structure photo-anode, which comprises the following steps:
1. printing and sintering of mesoporous tin oxide film
Taking 1g of mesoporous tin oxide slurry prepared in advance, coating the mesoporous tin oxide slurry on FTO conductive glass by using a silk screen, repeatedly coating the FTO conductive glass for three times to form a film with the thickness of 3-4 um, and sintering the film for 30min at the high temperature of 500 ℃ by using a tube furnace; repeating for 4 times to form a mesoporous tin oxide film of 12 um-16 um.
2. Printing of large particle tin oxide films
And (3) taking 1g of prepared large-particle tin oxide slurry, and repeatedly blade-coating the FTO conductive glass in the step (1) for three times until a large-particle tin oxide film with the thickness of 3-6 microns is printed.
3. Preparation of double-layer tin oxide structure photo-anode
And (3) putting the FTO conductive glass in the step (2) into a tube furnace, and sintering at the high temperature of 500 ℃ for 30min to form the double-layer tin oxide structure photo-anode.
4. Preparation of dye-sensitized solar cell
Soaking the FTO conductive glass in the
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.